Returns a line-of-site indicator interpolated from the TIN based on an input polyline.
[Visual Basic .NET] Public Sub GetLineOfSight ( _ ByVal pSurface As ISurface, _ ByVal pObserver As IPoint, _ ByVal pTarget As IPoint, _ ByRef ppObstruction As IPoint, _ ByRef ppVisibleLines As IPolyline, _ ByRef ppInvisibleLines As IPolyline, _ ByRef pbIsVisible As Boolean, _ ByVal bApplyCurvature As Boolean, _ ByVal bApplyRefraction As Boolean, _ [ByRef pRefractionFactor As Object] _ )
[C#] public void GetLineOfSight ( ISurface pSurface, IPoint pObserver, IPoint pTarget, ref IPoint ppObstruction, ref IPolyline ppVisibleLines, ref IPolyline ppInvisibleLines, ref bool pbIsVisible, ref bool bApplyCurvature, ref bool bApplyRefraction, ref object pRefractionFactor );
[C#]
Optional Values
pRefractionFactor To indicate that this parameter is undefined, first define a variable object Missing = Type.Missing; then pass this in as ref Missing.
[C++]
HRESULT GetLineOfSight(
ISurface* pSurface,
IPoint* pObserver,
IPoint* pTarget,
IPoint** ppObstruction,
IPolyline** ppVisibleLines,
IPolyline** ppInvisibleLines,
VARIANT_BOOL* pbIsVisible,
VARIANT_BOOL bApplyCurvature,
VARIANT_BOOL bApplyRefraction,
VARIANT* pRefractionFactor
);
[C++]Parameters
pSurface [in]pSurface is a parameter of type ISurface
pObserver [in]pObserver is a parameter of type IPoint
pTarget [in]pTarget is a parameter of type IPoint
ppObstruction [out]ppObstruction is a parameter of type IPoint
ppVisibleLines [out]ppVisibleLines is a parameter of type IPolyline
ppInvisibleLines [out]ppInvisibleLines is a parameter of type IPolyline
pbIsVisible [out] pbIsVisible is a parameter of type VARIANT_BOOL bApplyCurvature [in] bApplyCurvature is a parameter of type VARIANT_BOOL bApplyRefraction [in] bApplyRefraction is a parameter of type VARIANT_BOOL pRefractionFactor [optional] pRefractionFactor is a parameter of type VARIANTTo indicate this parameter is undefined pass a reference to a VARIANT with type VT_ERROR and scode value of DISP_E_PARAMNOTFOUND.
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.